Apparatus for winding



June 3, 1941. H. DILCHE RT 1 2,244,290

' 1 APPARATUS [FOR WINDING Filed Nov. 23, 1938 01/6/2677 INVENTOR BY/ ATTORNEY Patented June 3, 1941 UNITED STATES PATENT OFFICTEV' aanaso APPARATUS FOR .wmms

Heinrich Dilchert, Freiburg-in-Breisgau, Germany, assignor to Societe Ithodiaceta, Paris, France, a corporation of France Application November 23, 1938, Serial No. 241,887 In Germany November 27, 1937' 1 Claim. ei. ate-4s) This invention relates to improvements in the process and apparatus for the winding of straight-sided yarn packages. More particu- 'larly, the invention relates to improvement in winding apparatus of the type in which the yarn is wound on a support which is turned by peripheral contact of the support oryarn layers with a surface drive roll.

The winding of straight-sided yarn packages has a particular advantage in that very simple forms of yarn traversing mechanism can be employed. Heretofore, the winding of such straight-sided yarn packages on apparatus employing surface drive rolls for the rotation of the yarn packages has involved certain difllculties. For example, as the yarn was. traversed back and forth across the package considerable variation resulted in the arrangement and position of the sections of yarn at the sides of the package. At the points where the reciprocating traverse guide changed direction, the yarn was shoulder defined by the juncture of the. cylinsometimes overthrownvto project as a loop from I the end of the package, and at other times the yarn was drawn back from the end of the package. By this procedure great irregularity, and projecting or fallen yarns, at the sides of 'the package were found to be present in wound yarn packages. I

It is, therefore, an object of the present invention to provide an improved method and apparatus for the winding of yarn comprising a surface drive roll for rotating a yarn package, which apparatus is adapted to wind a straight-sided yarn package in which the sides are substantially even and regular.

Other objects of the invention will appear hereinafter. v

The details of the invention will be more clearly apparent by reference to the following description taken in connection with the accompanying illustrations, in which:

Fig-lire 1 is a front elevational view of one form various known means for varying the traverse The surface drive roller comprises a cylindrical section defined by A and beveled ends C, C. The yarn is wound on to the yarn package l5 by reciprocating the same backwardly and forwardly across the yarn package. This is accomplished by means of yarn guide I9 which is positioned on traverse bar ZI. The traverse bar 2! is reciprocated by means of a rotating cam and follower or in any other desired manner. The length of the traverse stroke of the yarn guide will be from a point slightly beyond one end of the cylindrical section of the drive roll to a. point slightly beyond the other end of the cylindrical section of the drive roll.

In this manner the yarn will be held between the yarn supporting member II and the slight drical section of the drive roll and the beveled ends thereof. It has been found that a straight sided yarn package can be produced in this manner without objectionable 'overthrown ends, loops, fallen yarns or yarns drawn inwardly from the ends.; The yarnfis-heldon the beveled ends of the drive roll when thethread guide changes its direction at the end of its traverse. At the extreme ends of the yarn package therefore, the yarn is wound with a slight flare. This slight flare or enlargement at the extreme ends of the yarn package will prevent any thread from shirring or falling from the end of the package. I D

If desired use may be made of any one of In accordance with the present invention,

straight-sided yarn packages can be wound on of apparatus suitable for use in accordance with winding apparatus comprising surface drive rolls for rotation of the yarn package. The yarn will be wound without substantial degradation such as is caused by groove or roughened sur I face, drive rolls. The yarn, may be unwound from the yarn packages produced in the present invention without catching, or degradation of the yarn, due to'unevenness or projecting yarns at the side of the package.

Since it is obvious that numerous changes can be made'in the details of the invention as specifically described and illustrated without departing from the nature and spirit of the invention, it is to be understood that the invention is not to be limited except as set forth in the appended claim.

I claim:

In a yam winding apparatus a positively driven surface drive roll constructed with a cylindrical center surface and beveled ends, a

substantially the line of contact between said support and said roll, and to reciprocate alon a line extending slightly beyond each end of the freely rotatable yarn support mounted to press 5 cylindrical section of said drive roll.

against said roll. and a reciprocating yarn guide HEINRICH DILCHERT.

positioned to guide yarn on to said support on 

